[enh] update CHANGELOG.md for 1.0.0rc0

CHANGELOG.md

+## [v1.0.0rc0](https://git.duniter.org/clients/python/duniterpy/-/milestones/12) (8th July 2021)
+
+### This release breaks backward compatibility !
+
+### Features
+- #140 Replace `aiohttp` with a non async http library (urllib and websockets)
+  - No more async keyword required
+  - If `async` mode is really being needed, look at `request_data_async.py` example
+
+- #160 Include examples into Python package
+  - Read new examples usage documentation in `README.md`
+  
+- #95 Remove `signatures` argument from all `__init__()`’s documents subclasses
+  - Document constructor is `Document(version: int, currency: str)`
+  - All `Document` subclasses can be signed when created with the optional `signing_key` argument
+  - #172 `version` is optional now and have a proper default per document type
+  - `currency` is optional now and have `G1_CURRENCY_CODENAME` by default
+    
+        signing_key: SigningKey = None,
+        version: int = VERSION,
+        currency: str = G1_CURRENCY_CODENAME,
+    
+  - Add `Identity.from_lookup_response()` to simplify examples
+  - Refactor `Document.signatures` (List) as `Document.signature` (str)
+  - Set `time` argument optional in SimpleTransaction
+
+- #173 Make Transaction easier with single and multi-sign
+  - Transaction(signing_keys: Optional[Union[SigningKey, List[SigningKey]]] = None) allows single signature or multi-signatures when created
+  - Transaction.sign() and multi_sign() add signature now to allow different key owner to sign additionally the Tx doc
+  - Transaction.check_signature() and check_signatures() are available
+
+- #178 Make `membership_type` argument optional with value 'IN' by default 
+
+- #175 Rename `timestamp` and `blockstamp` attributes/arguments depending on the type
+  - `block_id` for `BlockID` type
+  - `timestamp` for time in seconds
+  
+- #139 Rename Endpoints attributes from server to host(name)
+  - Rename `ConnectionHandler.server` to `address`
+  
+- #150 Add DUBP Mnemonic SigningKey feature with `SigningKey.from_dubp_mnemonic()`
+
+- #161, #168 Add DUBP Mnemonic example
+
+- #163 `Revocation.from_signed_raw()` now store timestamps into a BlockUID object
+
+- #170  Endpoints' regex improvement
+
+- #174 Remove GVASUBEndpoint (subscription now on GVAEndpoint by url path)
+
+- #181 `CRCPubkey` class moved from `documents` package to `key` package
+
+### Development
+- #132 Introduce [pre-commit](https://pre-commit.com/) for `black` formatter
+- #135 Move Pylint config from the `Makefile` to `pyproject.toml`
+- #153 Allow to install `black` dependency pre-releases
+- #162 Introduce `mypy`, `pylint`, `isort`, `gitlab-ci` pre-commit hooks
+
+### CI/CD
+- #166 Fix MR based pipelines do not trigger tools jobs when there is a code change
+- #169 Fix with a token `gitlab-ci-lint` hook no longer working since GitLab CI lint API requires authentication
+- #177 Run pre-commit into the CI
+
+### Fixes
+- #134 Fix license header showing in documentation using "#" comments, not docstrings
+  - Introduce [insert-license hook](https://github.com/Lucas-C/pre-commit-hooks)
+
+
 ## [v0.62.0](https://git.duniter.org/clients/python/duniterpy/-/milestones/16) (16th March 2021)
 
 ### This release breaks backward compatibility !